A.1.2 properties and classification of matter

• chemical properties - describe the reactivity of substance
• examples of chemical properties - combustibility, flammability, reactions with water
• physical properties - describes the physical composition of a substance
• examples of physical properties - colour, boiling point, melting point, state of matter
• pure substances - made up of identical particles
• elements - smallest form of a substance
• compounds - chemical combination of 2+ elements in a fixed ratio
• mixture - made up of 2+ pure substances
• Heterogenous mixture - mixture different components can be seen
• Mechanical mixture (ex. sandwich)
• Suspension - heterogenous mixture that has solute and solvent (ex. dirt water)
• Colloid - heterogenous mixture that's like suspension but you can't separate it easily (ex. milk)
• homogenous mixture - looks like 1 mixture

  type of homogenous mixture - solution

  example of solution - air